package com.atguigu.gmall.ware.util;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @param
 * @return
 */
public class HttpclientUtil {

	public static String doGet(String url) {

		// 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();

		// 创建http GET请求
		HttpGet httpGet = new HttpGet(url);

		CloseableHttpResponse response = null;
		try {
			// 执行请求
			response = httpclient.execute(httpGet);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
				HttpEntity entity = response.getEntity();
				String result = EntityUtils.toString(entity, "UTF-8");
				EntityUtils.consume(entity);
				httpclient.close();
				return result;
			}
			httpclient.close();
		}
		catch (IOException e) {
			e.printStackTrace();
			return null;
		}

		return null;
	}

	public static String doPost(String url, Map<String, String> paramMap) {

		// 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();

		// 创建http Post请求
		HttpPost httpPost = new HttpPost(url);

		CloseableHttpResponse response = null;
		try {
			List<BasicNameValuePair> list = new ArrayList<>();
			for (Map.Entry<String, String> entry : paramMap.entrySet()) {
				list.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
			}
			HttpEntity httpEntity = new UrlEncodedFormEntity(list, "utf-8");

			httpPost.setEntity(httpEntity);
			// 执行请求
			response = httpclient.execute(httpPost);

			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
				HttpEntity entity = response.getEntity();
				String result = EntityUtils.toString(entity, "UTF-8");
				EntityUtils.consume(entity);
				httpclient.close();
				return result;
			}
			httpclient.close();
		}
		catch (IOException e) {
			e.printStackTrace();
			return null;
		}

		return null;
	}

}
